<template>
  <el-menu
    default-active="1010101"
    class="el-menu-vertical-demo"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
    background-color="#162a52"
    text-color="#fff"
    active-text-color="#FFE78F"
  >
  <div style="display:flex;align-items:center;margin-top:6px;margin-left:6px">
    <div style="width:50px;height:50px"><img style="height:100%;width:100%" src="@/assets/edu2.png"/></div>
    <h1 v-if="!isCollapse" style="font-style:italic;text-align:center;color:yellow;margin-left:8px">乡村支教平台</h1>
  </div>

    <el-menu-item ref="clickItemInfo" @click="clickMenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
      <i :class="`el-icon-${item.icon}`"></i>
      <span slot="title">{{ item.label }}</span>
    </el-menu-item>
    <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
      <template slot="title">
        <i :class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{ item.label }}</span>
      </template>
      <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
        <el-menu-item @click="clickMenu(subItem)"  :index="subItem.path"><i :class="`el-icon-${subItem.icon}`"></i>{{ subItem.label }}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>
  </el-menu>
</template>
<style lang="less" scoped>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu {
    height: 100vh;
    h3 {
        color: #fff;
        text-align: center;
        line-height: 48px;
        font-size: 16px;
        font-weight: 400;
    }
}
</style>

<script>
export default {
  data () {
    return {

    }
  },
  methods: {
    handleOpen (key, keyPath) {
      // console.log(key, keyPath)
    },
    handleClose (key, keyPath) {
      // console.log(key, keyPath)
    },
    clickMenu (item) {
      if (this.$route.path !== item.path && !(this.$route.path === '/home' && (item.path === '/'))) {
        this.$router.push(item.path)
      }
      this.$store.commit('selectMenu', item)
    }
  },
  computed: {
    // 没有子菜单
    noChildren () {
      return this.menuData.filter(item => !item.children)
    },
    // 有子菜单
    hasChildren () {
      return this.menuData.filter(item => item.children)
    },
    isCollapse () {
      return this.$store.state.tab.isCollapse
    },
    menuData () {
      // 判断当前数据,如果缓存中没有,当前store中去获取
      return JSON.parse(window.localStorage.getItem('menu')) || this.$store.state.tab.menu
    }

  },
  mounted () {
    this.$refs.clickItemInfo[0].$el.click()
    // console.log(this.$refs.clickItemInfo[0])
  }
}
</script>
<style lang="less" scoped>
.el-menu {
  border-right: none;
}
</style>
